abstract |
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds, characterized in that it comprises one or more compounds of the formula I n nandn one or more compounds of the formula IA n n n n n n n n n n n n in which n R 1 , R 1A , X, X A , L 1-7 , A 1 , Z 1 and n have the meanings indicated in claim 1. |